<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>jQuery tab切换</title>
 <style type="text/css">
 *{
  margin:0;
  padding:0;
 }
 .wrap{
  margin-left: 50px;
  margin-top: 50px;
 }
 /*清浮动---clearfix*/
 .clearfix {
  *zoom: 1;
 }
 .clearfix:after {
  content: "";
  clear: both;
  display: block;
  height: 0;
  font-size: 0;
  visibility: hidden;
 }
 .blist {
  border:1px solid #d9d9d9;
  width: 275px;
  height: 32px;
 }
 .blist li:first-child{
  border-left: none;
 }
 .blist li{
  list-style: none;
  width: 68px;
  height: 32px;
  border-left:1px solid #d9d9d9;
  font-size: 14px;
  font-family: "楷体";
  line-height: 32px;
  text-align: center;
  float: left;
  /*鼠标样式改变为一个手*/
  cursor: pointer;
  /*字体免选中*/
  -webkit-user-select: none;
  
 }
 .blsit-list{
  width: 275px;
 }
 .blsit-list li{
  list-style: none;
  width: 275px;
  border:1px solid #ccc;
  height: 200px;
  border-top: none;
 }
 .wrap .blist li.active{
  font-weight: bold;
  color: red;
  border-top: 2px solid red;
  position: relative;
  top:-1px;
  height: 31px;
 }
 .blsit-list li:first-child{
  display: block;
 }
 .blsit-list li{
  display: none;
 }
 </style>
</head>
<body>
 <div class="wrap">
  <ul class="blist clearfix">
   <li class="active">电影</li>
   <li>电脑</li>
   <li>冰箱</li>
   <li>空调</li>
  </ul>
  <ul class="blsit-list">
   <li>A</li>
   <li>B</li>
   <li>C</li>
   <li>D</li>
  </ul>
 </div>


 <script type="text/javascript" src="./jquery.js"></script>
 <script type="text/javascript">
 $(function(){
  $(".blist").on("click","li",function(){
   // 设index为当前点击
   var index = $(this).index();
   // 点击添加样式利用siblings清除其他兄弟节点样式
   $(this).addClass("active").siblings().removeClass("active");
   // 同理显示与隐藏
   $(this).parents(".wrap").find(".blsit-list li").eq(index).show().siblings().hide();
  })
 })
 </script>
</body>
</html>